From £23,616
Matt Minson
At MM and Co Roofing we specialise in all aspects of the roofing industry from moss removal to complete re-roofing. We are experienced in working o...
From £21,896
Paul Martyn
PAULMARTYN Construction are here to help customers who need an Extension Builder in GU6. We offer a competitive rate to complete all your extension...

A flat roof extension ranges from the cheapest of £21,896 (PAULMARTYN Construction based in GU6) to the dearest of £23,616 (MM and Co Roofing based in GU5), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in GU6 by posting a job with HaMuch. We'll send it to extension builders in GU6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Guildford | £53 | £298 |
| Build A Flat Roof Extension near Waverley | £68 | £313 |
| Build A Flat Roof Extension near Horsham | £38 | £265 |
| Build A Flat Roof Extension near Great Bookham | £42 | £281 |
| Build A Flat Roof Extension near Woking | £43 | £277 |
| Build A Flat Roof Extension near Ash Vale | £41 | £277 |
| Build A Flat Roof Extension near Reigate | £40 | £270 |
| Build A Flat Roof Extension near Horley | £38 | £258 |
| Build A Flat Roof Extension near Crawley | £38 | £255 |
| Build A Flat Roof Extension near Aldershot | £41 | £275 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £18,256

Two storey extension - £89,134

Build a timber frame extension - £26,756

Build a swimming pool - £81,756

Single storey extension - £70,120

Side return extension - £50,005

Install an RSJ - £2,956

Outbuilding - £10,756

Build a Mansard loft conversion - £52,756

Loft conversion - £40,838

Build a kitchen extension - £42,756

Hip to gable loft conversion - £42,756

Granny annexe - £87,756

Garden office - £10,756

Convert a Garage - £16,756

Garage - £19,256

Build a flat roof extension - £22,756

Build a dormer loft conversion - £42,756

Concrete foundations - £7,006

Convert a bungalow loft - £29,756

Convert a basement - £46,005